2011 Kōfu International Open – Singles

Sachie Ishizu was the defending champion, but lost to Tamarine Tanasugarn in the second round.
Chang Kai-chen won the title, defeating Mandy Minella 6–4, 1–6, 6–4 in the final.

Singles
2011 Kōfu International Open
Champion	Chang Kai-chen
Runner-up	Mandy Minella
Final score	6–4, 1–6, 6–4

Seeds

1. Tamarine Tanasugarn (Semifinals)
2. Erika Sema (Semifinals)
3. Noppawan Lertcheewakarn (First Round)
4. Chang Kai-chen (Champion)
5. Mandy Minella (Final)
6. Yurika Sema (Quarterfinals)
7. Junri Namigata (Quarterfinals)
8. Aiko Nakamura (First Round)

Main draw

Key

• Q = Qualifier
• WC = Wild Card
• LL = Lucky Loser
• Alt = Alternate
• SE = Special Exempt
• PR = Protected Ranking
• ITF = ITF entry
• JE = Junior Exempt
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
	1	Tamarine Tanasugarn	3	2
	5	Mandy Minella	6	6
								5	Mandy Minella	4	6	4
								4	Chang Kai-chen	6	1	6
	4	Chang Kai-chen	6	4	6
	2	Erika Sema	4	6	4

Top half

	First Round							Second Round							Quarterfinals							Semifinals
	1	T Tanasugarn	6	6
	WC	R Ozaki	3	4				1	T Tanasugarn	6	6
		S Ishizu	6	6					S Ishizu	1	3
	Q	Y Miyazaki	2	4											1	T Tanasugarn	6	6
		C Ogi	1	2												A Omae	3	4
		A Omae	6	6					A Omae	7	6^6	7^7
	WC	R Sawayanagi	1	6	6			WC	R Sawayanagi	5	7^8	6^2
	8	A Nakamura	6	4	3																	1	T Tanasugarn	3	2
	3	N Lertcheewakarn	6	0	2																	5	M Minella	6	6
		C Takayama	4	6	6				C Takayama	6^5	6	6
		E Takao	7^7	4	2				M Eguchi	7^7	1	2
		M Eguchi	6^2	6	6											C Takayama	0	6	2
		H Watanabe	7^10	3	6^4										5	M Minella	6	4	6
	Q	Y Sakai	6^8	6	7^7			Q	Y Sakai	1	0
		K Hisami	1	2				5	M Minella	6	6
	5	M Minella	6	6

Bottom half

	First Round							Second Round							Quarterfinals							Semifinals
	7	J Namigata	6	6
	WC	M Minokoshi	0	1				7	J Namigata	6	5	7
		N Hamamura	7^7	1	1				W-h Hsu	2	7	5
		W-h Hsu	6^5	6	6										7	J Namigata	6	3	4
		A Oka	6	5	5										4	K-c Chang	2	6	6
		A Yonemura	2	7	7				A Yonemura	3	1
		C-w Chan	3	2				4	K-c Chang	6	6
	4	K-c Chang	6	6																		4	K-c Chang	6	4	6
	6	Y Sema	6	6																		2	E Sema	4	6	4
		Y Koshino	4	4				6	Y Sema	6	6
	WC	Y Tanaka	4	6	6			WC	Y Tanaka	1	1
	Q	M Ayukawa	6	0	2										6	Y Sema	0	6	3
	Q	A Yamasoto	5	6	3										2	E Sema	6	4	6
		R Tezuka	7	4	6				R Tezuka	2	0
		M Tanaka	0	2				2	E Sema	6	6
	2	E Sema	6	6

References

• Main Draw
• Qualifying Draw